Foldable can holder for backpack strap

After publishing my first version of the can holder, I thought it was lacking the ability to fold, so it's volume could be reduced when not in use, to be convenient and easy to store and carry. This has now been addressed.

The files are divided into two different folders :

1. The foldable can holder (director's cut) : The actual model
2. The derush : Various parts to put together alternative versions of the holder since ive been breaking my head for days about the best way to do it. I provide them so people can explore alternative systems and maybe even remix them. The CAD screenshots are illustrations of other options.

UPDATES :

In the folder titled “Back plates V2” you'll find reworked back plates that make it easy to use rubber bands to secure the can holder to a backpack strap. There is a back plate with two rubber band hooks, and one with a hook at the bottom and space at the top to glue a QUICK-CLIP adapter.

My preferred back plate version is the one that gets combined with a QUICK-CLIP adapter, as it allows for easy mounting and removing from a QUICK-CLIP buckle that can just stay on the backpack.

The hooks themselves have to be a separate piece that gets glued in a hole, as, if they were printed directly as part of the plate, the layer orientation would not make them durable.

Update 2 ,

My can holder fell and one of the pins connecting the sides snapped. Was it due to ca glue attacking the PETG ? I don't know. But this led me to address the issues posed by the pins :

They require glue, they can be a mess to assemble (seriously, I never had fun gluing them in place) And if one breaks, you have to re print 4 parts and do the assembly again.

Not ideal.

So after those pins snapped, I went to the hardware store and got an M3 threaded rod and a bunch of nuts (the one with the plastic insert). I then made the “bolt compatible side” stl. That's essentially the same model except that it now has a nice flat surface for the bolt to sit on.

My print settings :

• PETG
• 4 walls
• 20 per cent infill
• Tree supports
• 0.2 layer height
• mouse ears

Get rubber bands too, as well as glue.

Mounting it to a backpack :

The photos are showing the non foldable version, but mounting it goes exactly the same .

Witch models you should print depends on the way you want to attach the holder.

I've planed for a few options :

1. Mounting it on a plain backpack strap, with no preexisting attachment points.

In this situation, print “side with hook”

Wrap rubber bands around the strap and hook them SECURELY to the rings.

OR, print my remixed version of the QUICK CLIP buckle, made for rubber bands so it can be mounted to a plain strap and make the can holder easier to mount and remove.

“Foldable can holder back plate w hook” has a hook at the bottom to receive a rubber band.

    2. Mounting it on a backpack strap that has molle type webbing :

In this situation, “molle tab to glue” and “QUICK CLIP to glue” come in, both remixed from QUICK-CLIP.

“Horizontal strap clip to glue” is also available.

The clip itself comes from HERE

Use the tab that suits your needs best, and print either two “side with hook” or just one for the bottom and "ring" for the top, or use the hook at the bottom of the backplate.

 3. Mounting it somewhere that has an horizontal molle strap

In this situation,“Horizontal strap clip to glue” comes in.

The clip itself comes from HERE

Please remix my system for your specific needs.

There is potential to turn this into a base plate for a water bottle too.

Please share photos of your can holder on your favorite bag once it's printed, accompanied by memories from the crazy adventures it went on.

Update :

Someone asked for a way to use the holder with a 92mm in diameter bottle, on a bicycle. So Ive added such a file in the Directors cut folder. Its just the backplate. To use it, scale every other part in slicer by 141.5 per cent.

I'm also including a blank plate with no holes, as well as a model of the holes to add in slicer as a negative volume, if someone wants to use the holder with their bottle.

To use it, re-scale the plate using this formula :

(diameter of your bottle) x 46.7  divided by 92

That gives you the z measurement of the back plate you have to input in the slicer.

And 

(bottle's diameter) x 100 divided by 65

That gives you the percentage you have to input in slicer to upscale every other part of the holder.